Synonyms for Invasion:

n.

invade, besiege, annex, seize, subdue, occupy, suppress, conquer, subjugate. ingress, turnover, entry, reentry, comings and goings, homecoming, arrival, entrance. attack (noun)
attack, warfare, strike, assault, fury, foray, battle, siege, combat, spasm, outbreak, onslaught, offense, furor, thrust, bloodshed, sortie, raid, riot, frenzy, storm, fight, bombardment, barrage, war, charge, aggression, violence, tirade.
attack, encroachment (noun)
intrusion, onslaught, foray, offense, raid, inroad, aggression, assault.
interruption (noun)
intrusion.
invasion (noun)
intrusion, encroachment.
offense (noun)
offence.

Other synonyms:

comings and goings, ingress, entrance. homecoming, arrival. turnover. entry. encroachment
inroad, encroachment.

Usage examples for invasion

  1. The effect of such tidings upon a nation that always believed invasion to be impossible may easily be imagined, only I hope that we should take them better than did the Abati. – Queen Sheba's Ring by H. Rider Haggard
  2. Invasion was difficult and practically impossible to their neighbors. – The Complete Essays of C. D. Warner by Charles Dudley Warner
  3. Is it not criminal to bring foreign invasion upon a country? – The Project Gutenberg Memoirs of Napoleon Bonaparte by Bourrienne, Constant, and Stewarton